specify python version in conda-pkgs.sh?

[sybenzvi]

The conda installation command in conda-pkgs.sh does not specify the python version, so install.sh will grab whatever Python conda wants to provide. My installation just installed Python 3.12 but fiberassign won't compile with this version (we need 3.10).

An easy fix would be to include python=3.10 in the relevant line of conda-pkgs.sh.

[sybenzvi]

Rethinking this, it's probably better to force a downgrade to python 3.10 directly in the desiconda installation script, right after conda is activated. A KPNO-specific fix with a guard for NERSC installations could look something like this:

...
source $CONDADIR/bin/activate
if [[ "$HOSTNAME" == "desi-7" ]] || [[ "$HOSTNAME" == "desi-8" ]]; then
    if [ "$USER" == "datasystems" ]; then
        conda install --copy --yes python=3.10
    else
        echo "At KPNO, must run as datasystems."
        return
    fi
fi
export PYVERSION=...